I think, you missed to update on deployer config as given in link
Tridion 2011 SP1 HTTPS Publishing throwing 'Post size exceeded allowed limits'Tridion 2011 SP1 HTTPS Publishing throwing 'Post size exceeded allowed limits'
<HTTPSReceiver MaxSize="524288000" Location="D:\tridion\incoming" InProcessDeploy="true"/>
Please apply this and hopefully that should resolve your issue.